Improvement in jointer for circular saws



ted

tant

JOHN R'. BLLIS, O'F BOWLING GREEN, OHIO.

Leers 'Patent No. 86,208, ma .Tammy 26, 1869.

IMPROVIEMENT IN J' OINTER FOR CIRCULAR SAWS.

The Schedule referred to in these Letters Patent and making part of thesame.

To all whom fit may concern.-

Be it known that I, JOHN R. BULLIs, of Bowling Green, in the county ofWood, and State of Ohio, have invented new and useful Improvements inCircular-Saw J ointers; and I do hereby declare that the following is afull and exact description of the same, reference being had to theaccompanying drawings, andto the letters of reference marked thereon.

This invention relates to a simple device for jointing circular saws,and consists mainly of a frame, hold ing a tile, which latter isadvanced, as the teeth are out away, by means of an adjustablesash-slide.

The details of construction, and manner of operation, will be fullydescribed hereinafter.

In the drawings- Figure l represents a perspective view, and

Figure 2, a sectional elevation. In order that those skilled in the artto which my invention appertains may be enabled to make and use thesame, I will now proceed to describe its construction and operation.

A represents the frame-workl of the machine, consisting of the beams t aand uprights a' a', which are suitably braced and connected by cross-beams, as shown.

B B represent inclined ways up the front, upon which slides the sash B1,which is provided at its front Vend with a pivoted bar, b, having asocket, in which the upper end of the le is secured.

The sash is also provided with the screw-rod b and hand-nut b2.

B2 represents a cross-beam, securely attached to the ways B, whichextends across the sash B, and furnishes a bearing-surface for thehand-nut bz'to press against. The sash-slide-is suitably cut away in thecentre, in order to move freely without interfering with this beam.

O represents a screw-rod, provided with the pivoted brace o, which isarrangedto' press against the back of the file at any angle. This rod isscrewed in crossbeams, suitably located, and is operated by means of ahand-nut, as shown.

D represents a cross-beam, in which the lower end of a file, E, isslipped. This is so arranged as to turn freely as the file changesposition.

From 'this description the operation of my invention will be readilyunderstood.

.When it is desired to use the machine, it should be placed in front ofthe moving saw, with the file bearing against the largest teeth. Theoperator, standing behind the machine, with his feet upon thebed-pieces, to keep it steady, advances the slide`.and brace, as theteeth are cutaway, until all are touched by the le and made uniform inheight.

I do not claim broadly the manner of jointing a saw by advancingl a leby means of a screw, for such an arrangement is shown in the patent ofW. B. Noyes,

-March 3, 1868 but W'hat I do claim, and desire to secure by LettersPatent, is-

The arrangement ofthe frame A with ways B, pivoted cross-beams b, D, andadjustable sash B, with iile E and brace c, when all the parts areconstructed as described, and for the purpose set forth.

This specification signed and witnessed, this 9th day of October, 1868.

J OHN. R. BULLIS. Witnesses:

HENRY MERCER, ISAAC H. RIGKARD.

